Messages written on the wall are embedded in the blockchain,
the public registry underneath bitcoin.
There are almost 100 thousands copies of this ledger all around the world and soon it will also be in space.
Even if this site goes down or disappears, your message is guaranteed to persist for generations to come.
Publicly declare your love for someone
Memorialize an event or a person
Just say hello to the entire world
Drag & Drop or select a document to check if it has been notarized in the blockchain or to notarize a new one.
3477 documents notarized so far. Next expected commit on the blockchain in 1 day.
Drop here a document
Or click to select one
Upload the hash and certify it in the blockchain.
The document is hashed client side and only the hash is uploaded to our server preserving your privacy.
You can certify documents also by sending an email with attachments to firstname.lastname@example.org.
If you want to know more about this feature have a look at our service announcement, how to manually verify notarization, how to independently verify notarization or the independent verification page.
We support the OpenTimestamps format!